Alright, let's work through 85704072 times 61845524 step by step
85704072 × 61845524 = 61845524 × (85704072)
+ 61845524 × 2 resulting in 123691048
+ 61845524 × 70 that is equal 4329186680
+ 61845524 × 000 yielding 0
+ 61845524 × 4000 resulting in 247382096000
+ 61845524 × 00000 what gives us 0
+ 61845524 × 700000 giving us 43291866800000
+ 61845524 × 5000000 what gives us 309227620000000
+ 61845524 × 80000000 resulting in 4947641920000000

= 5300413241773728
